A piece of ice falls from a height h so that it melts completely- Only one-quarter of the heat produced is absorbed by the ice and all energy of ice gets converted into heat during its fall- The value of h is -Latent heat of ice is 3-4times 10-5-J-kg and g-10N-kg-34 km544 km136 km68 km

Question

Toppr Admin · Accepted Answer

Given that- mgH-mL-x21D2-H-4Lg-4-xD7-3-4-xD7-10510-136-xA0-km

A piece of ice falls from a height h so that it melts completely. Only one-quarter of the heat produced is absorbed by the ice and all energy of ice gets converted into heat during its fall. The value of h is [Latent heat of ice is 3.4×105J/kg and g=10N/kg]:34 km544 km136 km68 km

Given that: mgH=mL⇒H=4Lg=4×3.4×10510=136 km

Given that: $m g H = m L$

$\Rightarrow H = \frac{4 L}{g} = \frac{4 \times 3.4 \times 10^{5}}{10} = 136 k m$